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Communication: FOURTH PERIOD

A randomized 25 question test from a pool of 761 questions, good luck!
Historical data can be logged through a HMI application. Which of the data storage methods below would best be described as one that has superior acquisition of events, but does not use it's storage space effectively?
Modbus has standard command codes to allow the master to access information from it's slaves. Which of the commands below would be used to request the coils ON/OFF status of inputs # 10197 to 10218 from a slave device?
There are several data access methods used to transmit data. Which of the answers below can be described as a method that allows sequential communication on a network with multiple devices?
CSMA/CD is used as an access method that uses constructive interference detection for any data collisions. Which of the OSI layers does this detection occur on?
The quality of a OUT parameter status field has several different classifications. Which of the classifications below can be described as the block supports a cascade path and the value quality is good?
Which of the messaging methods is best described as one that can only be initiated by the link master in the H1 transmission system?
In a motor control function block program, conditional block are used. Which of the answers below is best described as a condition that must be TRUE before a device can be activated?
Which of the terms below can be best described as a device with an invalid tag name tag name?
Which of the answers below best represents the affect of superimposed voltage or current on a signal?
Which answer below is best described as the RS-485 standard for voltage range to transmit a "Mark"?
HMI networks are needed to expand or contract as required over their lifetime of use. Which of the networking types below will solve multiple DA server scalability issues?
There are two characteristics that are defined by the classifications of the IPv4 networks. Which of the answers below contains both of those characteristics?
A defined area of geographical coverage is commonly called an area network. Which of the area networks below best known for use with USB and bluetooth devices?
Which of the answers below best represents the maximum number of devices that can be connected to an H1 multidrop bus network?
Modbus protocol can implement data encapsulation over IP based networks. Which of the statements below is an disadvantage of using encapsulation?
Data communication in a DCS takes the form of various net works. Which of the networks below connects to servers that share business data?
IPv4 and IPv6 are the two current versions of IP. Which of the answers below is the defining difference between the two protocols?
A defined area of geographical coverage is commonly called an area network. Which of the area networks below is a network that links smaller networks together, but potentially on a global scale?
Which of the terms below is best described as "losses resulting from defects from the manufacture of the cable"?
Which of the categories below best represents a component not used in the construction of a segment for DeviceNet?
In a typical GUI, values take one of four generic indicators. Which of the indicators below would best used where discrete data needs to be provided, but a simple colour change will suffice?
A typical DCS has at least four layers in it's architecture. Valves, switches and transmitters are all under the direct control of which of the layers below?
Providing power to remote sites in a SCADA system has several difficulties associated with it. Which of the answers below would be best defined as one that is power generating 24 hours of the day under the right conditions?
The HMI in a SCADA system uses typical hardware and software. Which of the environments below would the HMI reside?
SCADA systems are specialized utilizations of a process control systems. Which of the terms below can be best defined as manipulation and communication of a process though a control system?